#ifndef _KERN_CLOCK_H_
#define _KERN_CLOCK_H_
#include <libkern/OSBase.h>
#include <mach/message.h>
#include <mach/clock_types.h>
#include <mach/mach_time.h>
#ifdef MACH_KERNEL_PRIVATE
#include <ipc/ipc_port.h>
struct alarm {
struct alarm *al_next;
struct alarm *al_prev;
int al_status;
mach_timespec_t al_time;
struct {
int type;
ipc_port_t port;
mach_msg_type_name_t
port_type;
struct clock *clock;
void *data;
} al_alrm;
#define al_type al_alrm.type
#define al_port al_alrm.port
#define al_port_type al_alrm.port_type
#define al_clock al_alrm.clock
#define al_data al_alrm.data
long al_seqno;
};
typedef struct alarm alarm_data_t;
#define ALARM_FREE 0
#define ALARM_SLEEP 1
#define ALARM_CLOCK 2
#define ALARM_DONE 4
struct clock_ops {
int (*c_config)(void);
int (*c_init)(void);
kern_return_t (*c_gettime)(
mach_timespec_t *cur_time);
kern_return_t (*c_settime)(
mach_timespec_t *clock_time);
kern_return_t (*c_getattr)(
clock_flavor_t flavor,
clock_attr_t attr,
mach_msg_type_number_t *count);
kern_return_t (*c_setattr)(
clock_flavor_t flavor,
clock_attr_t attr,
mach_msg_type_number_t count);
void (*c_setalrm)(
mach_timespec_t *alarm_time);
};
typedef struct clock_ops *clock_ops_t;
typedef struct clock_ops clock_ops_data_t;
struct clock {
clock_ops_t cl_ops;
struct ipc_port *cl_service;
struct ipc_port *cl_control;
struct {
struct alarm *al_next;
} cl_alarm;
};
typedef struct clock clock_data_t;
extern void clock_config(void);
extern void clock_init(void);
extern void clock_service_create(void);
extern void clock_alarm_intr(
clock_id_t clock_id,
mach_timespec_t *clock_time);
extern kern_return_t clock_sleep_internal(
clock_t clock,
sleep_type_t sleep_type,
mach_timespec_t *sleep_time);
typedef void (*clock_timer_func_t)(
AbsoluteTime timestamp);
extern void clock_set_timer_func(
clock_timer_func_t func);
extern void clock_set_timer_deadline(
AbsoluteTime deadline);
extern void mk_timebase_info(
uint32_t *delta,
uint32_t *abs_to_ns_numer,
uint32_t *abs_to_ns_denom,
uint32_t *proc_to_abs_numer,
uint32_t *proc_to_abs_denom);
#define scalar_to_AbsoluteTime(x) (*(AbsoluteTime *)(x))
#endif
#define MACH_TIMESPEC_SEC_MAX (0 - 1)
#define MACH_TIMESPEC_NSEC_MAX (NSEC_PER_SEC - 1)
#define MACH_TIMESPEC_MAX ((mach_timespec_t) { \
MACH_TIMESPEC_SEC_MAX, \
MACH_TIMESPEC_NSEC_MAX } )
#define MACH_TIMESPEC_ZERO ((mach_timespec_t) { 0, 0 } )
#define ADD_MACH_TIMESPEC_NSEC(t1, nsec) \
do { \
(t1)->tv_nsec += (clock_res_t)(nsec); \
if ((clock_res_t)(nsec) > 0 && \
(t1)->tv_nsec >= NSEC_PER_SEC) { \
(t1)->tv_nsec -= NSEC_PER_SEC; \
(t1)->tv_sec += 1; \
} \
else if ((clock_res_t)(nsec) < 0 && \
(t1)->tv_nsec < 0) { \
(t1)->tv_nsec += NSEC_PER_SEC; \
(t1)->tv_sec -= 1; \
} \
} while (0)
extern mach_timespec_t clock_get_system_value(void);
extern mach_timespec_t clock_get_calendar_value(void);
extern void clock_set_calendar_value(
mach_timespec_t value);
extern void clock_adjust_calendar(
clock_res_t nsec);
extern void clock_initialize_calendar(void);
extern mach_timespec_t clock_get_calendar_offset(void);
#define AbsoluteTime_to_scalar(x) (*(uint64_t *)(x))
#define CMP_ABSOLUTETIME(t1, t2) \
(AbsoluteTime_to_scalar(t1) > \
AbsoluteTime_to_scalar(t2)? (int)+1 : \
(AbsoluteTime_to_scalar(t1) < \
AbsoluteTime_to_scalar(t2)? (int)-1 : 0))
#define ADD_ABSOLUTETIME(t1, t2) \
(AbsoluteTime_to_scalar(t1) += \
AbsoluteTime_to_scalar(t2))
#define SUB_ABSOLUTETIME(t1, t2) \
(AbsoluteTime_to_scalar(t1) -= \
AbsoluteTime_to_scalar(t2))
#define ADD_ABSOLUTETIME_TICKS(t1, ticks) \
(AbsoluteTime_to_scalar(t1) += \
(integer_t)(ticks))
extern void clock_timebase_info(
mach_timebase_info_t info);
extern void clock_get_uptime(
AbsoluteTime *result);
extern void clock_interval_to_deadline(
natural_t interval,
natural_t scale_factor,
AbsoluteTime *result);
extern void clock_interval_to_absolutetime_interval(
natural_t interval,
natural_t scale_factor,
AbsoluteTime *result);
extern void clock_absolutetime_interval_to_deadline(
AbsoluteTime abstime,
AbsoluteTime *result);
extern void clock_deadline_for_periodic_event(
AbsoluteTime interval,
AbsoluteTime abstime,
AbsoluteTime *deadline);
extern void clock_delay_for_interval(
natural_t interval,
natural_t scale_factor);
extern void clock_delay_until(
AbsoluteTime deadline);
extern void absolutetime_to_nanoseconds(
AbsoluteTime abstime,
UInt64 *result);
extern void nanoseconds_to_absolutetime(
UInt64 nanoseconds,
AbsoluteTime *result);
#endif